分子马达
执行机构
分子机器
运动(物理)
纳米技术
化学
绕固定轴旋转
弯曲
液晶
分子开关
纳米尺度
机器人学
生物系统
人工智能
机械工程
分子
材料科学
计算机科学
光电子学
机器人
工程类
有机化学
复合材料
生物
作者
Jiaxin Hou,Guiying Long,Wei Zhao,Guofu Zhou,Danqing Liu,Dirk J. Broer,Ben L. Feringa,Jiawen Chen
摘要
Recent developments in artificial molecular machines have enabled precisely controlled molecular motion, which allows several distinct mechanical operations at the nanoscale. However, harnessing and amplifying molecular motion along multiple length scales to induce macroscopic motion are still major challenges and comprise an important next step toward future actuators and soft robotics. The key to addressing this challenge relies on effective integration of synthetic molecular machines in a hierarchically aligned structure so numerous individual molecular motions can be collected in a cooperative way and amplified to higher length scales and eventually lead to macroscopic motion. Here, we report the complex motion of liquid crystal networks embedded with molecular motors triggered by single-wavelength illumination. By design, both racemic and enantiomerically pure molecular motors are programmably integrated into liquid crystal networks with a defined orientation. The motors have multiple functions acting as cross-linkers, actuators, and chiral dopants inside the network. The collective rotary motion of motors resulted in multiple types of motion of the polymeric film, including bending, wavy motion, fast unidirectional movement on surfaces, and synchronized helical motion with different handedness, paving the way for the future design of responsive materials with enhanced complex functions.
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